
%\documentclass[letterpaper,12pt]{article}
%\usepackage[x11names,rgb]{xcolor}
%\usepackage{tikz}
%\usetikzlibrary{snakes}
%\usetikzlibrary{arrows}
%\usetikzlibrary{shapes}
%\usetikzlibrary{backgrounds}
%\usepackage{amsmath}
%\oddsidemargin 0in
%\evensidemargin 0in
%\topmargin 0in
%\headheight 0in
%\headsep 0in
%\textheight 9in
%\textwidth 6.5in
%\begin{document}
%\pagestyle{empty}
%\vspace*{\fill}
%\begin{center}
\documentclass{article}
 
\usepackage[pdftex,active,tightpage]{preview}
\usepackage{tikz}
\usetikzlibrary{snakes}
\usetikzlibrary{arrows}
\makeatletter
 
\begin{document}
\begin{preview}
	%%
	\begin{tikzpicture}[scale=0.6]
	    		% domain boundary 
	    		\draw (0,0) rectangle (8,8);
	    		%% blocks ...    		
	    		\draw[fill=green!30] (2.4,3.4) rectangle +(0.6,0.6);	  		
	    		\draw[fill=green!30] (3,3) rectangle +(1,1);
					\draw[fill=green!30] (4,0) rectangle +(2,2);
					\draw[fill=green!30] (6,0) rectangle +(2,2);
					\draw[fill=green!30] (4,2) rectangle +(2,2);
					\draw[fill=green!30] (6,2) rectangle +(1,1);
					\draw[fill=green!30] (7,2) rectangle +(1,1);
					\draw[fill=green!30] (6,3) rectangle +(1,1);
		  		  		
	    		%% labels ...
	    		\draw (4,6) node {{\scriptsize Region}};
	    		\draw (4,5) node {{\scriptsize not relevant}};
	    					    		
	    		\draw (2.72,3.7) node {{\tiny $a$}}
	    					(3.5,3.5) node {{\scriptsize $b$}}
	    					(5,1) node {$c$}
	    					(7,1) node {$d$}
	    					(5,3) node {$e$}
	    					(6.5,2.5) node {{\scriptsize $f$}}
	    					(7.5,2.5) node {{\scriptsize $g$}}
	    					(6.5,3.5) node {{\scriptsize $h$}}	;
	    		
	    	\end{tikzpicture}%%
\end{preview}
\end{document}

%\end{center}
%\vspace*{\fill}
%\end{document}
    	